Even this year, Minnesota is still a reasonably purplish state. We're the only state to never vote for Reagan.
This year was an anomaly, but I would say the urban areas are more liberal than the rural areas, in general.
But it's also fairly religious, but diverse in that religiosity. It's one of those states without a majority denomination. It's not mostly Catholic, Lutheran, Presbyterian, etc, but diverse in even their Christan thought.
So, to answer your question, politics in MN are diverse as the people.